So I have my new system in my C6 ...something isn't right. I bought my kenwood 9960 and a PAC os2bose adaptor b/c I was told it was the correct one for my 07 bose/onstar car.

I also bought the sw controller .
I had the follow installed.
Diamond d5 600.4 amp, d5 300.2 amp
ID 6.5" componets in the door and 5.25 in the back.
A custom amp rack and fiberglass sub enclosure with a IDQ v2or3 10"

Something just isn't right.... I had almost no bass out of the doors and even with the gains turned up I still think something isn't right.
The output to the speakers seems weak. The signal to the sub is weak too.
Is there a control on the Kenwood that could adjust the rca voltage ? This HU has a 5v pre-out and that should be giving a really good signal to the amps, but i have to have the amps gains turned up way more than they should be. If the system was running right I don't think the speakers could handle the power that the amp should be putting out.
Also the 300.2 amp is bridged to run the 10" and it was kicking on and off on its own ! And not hitting hard either. The amps are running really hot to the touch to me also.

The installer has used 8g for the amps since the amps are only 3 feet from my Z06 battery, he will be putting on 4g next week. Can the amps be grounded at the battery ? Thats how it is now.

The Diamond audio amps are normally under-rated but seem to be under performing right now.

I checked to see if I had a out of phase speaker wire, and didn't find one going to the cross overs or on the cross overs.

How exactly do you retain the onstar with this unit ? Do you have to use the center channel speaker to hear the onstar ?

Is anyone here on the board live near L.A. ? I'm coming over today for a few days to have a short vacation. I'll be attacking the exotics in my Z06 on Sunset blvd tonight !

I've been working really hard on getting good stuff for my car and Have a nice looking system.

I'm looking for ideas on what may be causing my system to be under performing.

I have been through all the set-up menus etc. on the DNX9960 and still haven't found anything that makes a big difference...there is a ton of control aval. on the HU...but still things are not as good as expected. Turning the sub level all the ways up on the HU barely makes it go on normal music.

thx for any input....... I'm going nuts worring about this and don't want to damage my stuff.

 

have your installer check the voltage on the amp trigger wire coming out of the OS2 Bose going into the Kenwood harness. I had a similar issue, and called PAC. They know that Vettes draw more power and have a tendency to blow the circuit that controls the amp trigger wire on their harness. The work around if your amp trigger wire is blown is to take the amp trigger wire from the kenwood harness to the blue wire that goes from the OS2 Bose adapter to the blue wire. That will kick your amps on but take away onstar. PAC audio told me you need to add a relay in that will give more power to make the system work properly. Hope this helps you out. I was beating my head against a wall for 3 days trying to figure out why my amps werent turning on. Call PAC audio and they can tell you how to set up the relay.

 

it has nothing to do with ur radio or the wiring adapter, its something between ur radio and amps, or a setting on radio or amps

 

The amps turn on, and get pretty warm at times.
It seems like the speakers are only getting minimal power though. I have no bump in the bass unless the hu is turned up. I would guess the amps would make the 6.5" front speakers sound good even at low volumes, but most of the sound at low volume is treble.

cna I or my installer use a volt meter to verify the voltage from the Hu to the amp is 5v or what ever it should be for my dnx9960 ? Does anyone one know what that voltage should be ? Should it be the full 5v or lower ? I left a message for my installer to get me a better rca wire too. He has installed a Stinger 3 series 6 channel wire...is that a decent wire ? They have a better one for $30-40 more...worth the $$ ? I wanted the better one but his supplier sold him the wrong ones. I also plan on have the 8g changed to 4g too.

Can i send someone some pics of my amp setting to look at ?

thx guys for all your help... you guys are great !

 

Changing the power cables and RCA's won't help your main problem, the best ears in the world would have a hard time telling the difference between the best RCA's ever made and coat hangers if they were both installed and set up properly, and the smaller gauge power wire is perfectly capable of powering your setup even at moderate volumes.

Sounds to me like something just isn't hooked up properly.

What audio output was used coming out of the HU harness to connect to the OS2-Bose, line-level RCA plugs or speaker-level wires? I've never installed an OS2Bose adapter, and the instructions I've found online just plain suck, but every picture I've seen of the unit only has loose wires on the harness, not RCA plugs. That makes me think that you need to use the speaker-level outputs from the HU to the interface, then the interface converts the speaker-level signals down to line-level for the amp. If that's the case, and you used the RCA line-level outputs, the signal getting to the amp will be very weak, which would cause your system to sound like crap and overheat

 

i would venture to say its all in the headunit adjustments and amp adjustments

 

I'm not sure how it is wired. I only need the bose amp for the onstar to power the center channel for onstar use only.

I know something wasn't right when I got the car and the center channel was playing music thru it. I don't understand how the bose amp can see any audio signal if the system is wired correctly, since I have 2 amps for the non-stock speakers.

I also have some engine noise and a high pitch sound when the volume is at zero. Not sure if everyone would hear it, but it goes away when the HU it turned off.

Can't he just run the rcs from the back of the Hu to the amp ?? I don't see why the signal would be getting messed up if that is how he has it wired.

I just talked to him, the rcas run from the Hu to the amps... so We don't understand the issue.

He will be looking it over Sat am.

Wish me luck .........

 

I think I know what might be causing my issues ...I'm getting very low voltage from the HU to the Amp.

Can someone tell be what should be measured at the end of the rca ? The HU is rated at 5v and the max volume is 35...at volume 25 I get less than 1 volt...more like 0.13 to 0.2 !

Is that my probem ? I would think running the Hu at 70+% would create a stronger signal at the end of my 12' RCA's.
The signal is even lower at say volume 10-15 where I would probally do most of my listening.

Is there a way to reset the Kenwood HU back to factory specs totally...using the front reset button doesn't reset it completely.

thx guys